The Hoya 52mm Digital Filter Kit II includes a UV (C) HMC filter, a circular polarizer filter, and a 3-stop neutral density filter in a convenient filter pouch. This kit provides everything necessary to get started with filtration for your digital camera.

The UV (C) filter is a multi-coated filter with a slim mounting ring. This makes it useful for wide-angle lenses to avoid potential vignetting. Also, the UV filter itself is a general use, clear filter that helps to absorb ultraviolet light. No additional coloration or contrast is provided, allowing you to pair this filter with others. It is also useful as a general protective filter to leave on lenses at all times. Filters help to reduce dust and moisture from reaching your lens element and provide additional protection in case of drops or situations where scratching could occur.

Hoya HMC filters are multi-coated for reducing flare, ghosting, and reflections on the filter surface. As a result, over 97% light transmission is possible, providing you with additional contrast and high color fidelity.

A circular polarizer filter helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges, and filters, this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.

A circular polarizer only differs from a linear polarizer in that it contains a quarter wave plane in addition to the linear polarizing filter. The addition of this quarter wave plane is to circularly polarize the linearly polarized light for the use of auto focus and exposure functions. Due to how the light is broken down and filtered with a linear polarizer, auto focus and exposure accuracy become skewed during use. When the light becomes circularly polarized, it permits the use of these functions.

A neutral density filter has several uses and offers the possibility to achieve otherwise unachievable results. ND filters appear gray and reduce the amount of light reaching the film. They have no effect on color balance. This filter offers a filter factor of 0.9, equivalent to 3 stops of light.

UV (C) HMC Filter    Circular Polarizer Filter    Neutral Density (NDX8) 0.9 Filter    Filter Pouch

Absorbs UV light, which can cause outdoor photos to appear hazy and indistinct

Clear filter provides no additional coloration or contrast, allowing you to pair this filter with others

Works as general protection filter to reduce dust, moisture, and scratches from reaching lens elements.

HMC multi-coating help to reduce flare, ghosting, and reflections on the filter surface for greater contrast and color fidelity. Greater than 97% light transmission is possible, providing additional contrast and high color fidelity.

Related Questions and Answers

Q: 1. Do these filters have a thread on the front for using a cap?

A: Yes, they are threaded the cap will work

Q: 2. Would this fit a Fuji 23mm f2 lens?

A: Yes it will!

Q: 3. The current image for this 3-filter kit shows a Hoya HMC Super Circular Polarizing filter and says on the filter, made in Japan. Is this the filter that those of you who purchased recently received? If not, which Hoya CPL did you receive? Thanks!

A: Mine is made in Philippines (all 3)

Q: 4. Is the circular polarizer included in this kit the same as the Hoya Alpha Circular Polarizer sold separately?

A: We are fairly certain it is a Hoya HMC Circular filter. The Alpha Circular Polarizer costs as much as this set.

Q: 5. By how many stops of light does the circular polarizer decrease exposure?

A: The following unit will effectively reduce your lens aperture by up to 2 full stops.

Q: 6. Are these filters glass or plastic?

A: Plastic

Q: 7. will this fit my canon 50mm 1.8 with 52mm front?

A: Yes, they are fully compatible.

Q: 8. Can I mount all three filters on at the same time?

A: You can, but you shouldn't.

Q: 9. Can these filters be used together, in what combinations? Do they have threads on both sides?

A: Yes, you can stack theses filters in any order you like. Typically the UV filter goes on first, then either the polarizer or nd, keep in mind too many filters stacked can cause vignetting (darken of the edges) especially on a wide angle lens.

Q: 10. I bouth this item and the 10-18mm Canon lens and I was using the UV with the polarizer attached to it and when looking through the view I see black borders around the image, is this ok? I removed both filters and took the picture again and the black border was not there.

A: That is called vignette. It means that the filters are too thick to be used with that lens and you will get vignette in your images. Chances are if you set the lens to 18mm you might not have vignette. In general it is not a good idea to stack filters so when you use a polarizer you should take off the UV filter. It will reduce the amount of vignette. But with that wide a lens you still might get vignette.